Funny enough, I went to https://www.isitdownrightnow.com/ to check if Facebook is down, and isitdownrightnow is down itself... probably from the massive number requests coming to check if Facebook is down
isup.me/facebook gets me what I want.
It says Google is down but it's not. [1]
It is a really large part of it. Also, when people see WhatsApp and see no connection, then open Facebook and see no connection either, it's _very_ likely that the link is at fault and not Facebook.
It's the AOL of 2021
Tried and died.
> Is Facebook down right now?
> Uh oh! Something went wrong on our side. It's not you, it's us. Feel free to contact us if this persists.
TLDR; Metastable failures occur in open systems with an uncontrolled source of load where a trigger causes the system to enter a bad state that persists even when the trigger is removed.
[1] Metastable Failures in Distributed Systems - https://sigops.org/s/conferences/hotos/2021/papers/hotos21-s...